<u>Answer:
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The build-up of three oxygen created our ozone layer around two billion years ago.
<u>Explanation:
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- The ozone layer is a part of the stratosphere which is located right after the troposphere in the atmosphere of the Earth.
- The ozone gas is made up of the abundance of three oxygen molecules combining with the ultraviolet radiation emitted by the Sun.
- The development of the ozone layer happened around two billion years ago when the oxygen concentration levels on the planet began to rise slowly and gradually.
Answer:
Explanation:
conifer trees are mostly found in alpine tundra
There is the indian ocean or the arabian sea is west of India or the the bay if bengal is west
Answer: I think It would be D
Explanation: For one, I learned about this in Junior High. Two, There are a lot of currents there, because it is in between the south pole and the equator, so the strength of wind is really great.
I think Yukon Territory or the Interior Plains, im guessing
